| Résumé : |
Treatment capable of covalently binding aromatic 1,2-dicarboxylic acids to collagen are described. Aluminium tannage of the modified collagen produces white leather with good thermal and dyebath stability, in contrast to that produced by similar tannage of unmodified collagen. However, the treatment also results in excessive swelling and reduced dye affinity.
The aromatic 1,2-dicarboxylic acid groups also act as strong binding sites for chromium, but not for titanium or zirconium. The shrinkage temperature of the modified collagen, after chrome tannage, is exeptionally high, whereas the thermal stability after titanium or zirconium tannage is little different from that attained by similar tannage of untreated collagen. |
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Ajouter le résultat dans votre panier Affiner la rechercheCollagen crosslinking : new binding sites for mineral tannage in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXXII (Année 1987)
